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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
> Journal Vol & Issue
The Korean Journal of Pesticide Science
Journal Basic Information
Journal DOI :
The Korean Society of Pesticide Science
Editor in Chief :
Volume & Issues
Volume 3, Issue 3 - Dec 1999
Volume 3, Issue 2 - Aug 1999
Volume 3, Issue 1 - May 1999
Selecting the target year
Isolation, identification, and culture conditions of the strain producing antibacterial antibiotic
Yoo, Jae-Hong ; Yoon, Sang-Hong ; Koo, Bon-Sung ; Yeo, Yun-Soo ; Park, In-Cheol ; Lee, Byung-Moo ; Ryu, Jin-Chang ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 1~7
The strain with antibacterial activity was isolated among soil samples collected in Suwon area. The isolated strain was identified as Bacillus sp. YR-1 with respect to its morphological, cultural, and physiological characteristics. Optimal medium for the highest production of antibiotic was composed of sucrose 2.0%(w/v), peptone 2.0%(w/v) and NaCl 0.1%(w/v). The maximum production of antibiotic was shown at
for 48 hours with the initial pH 7.0.
-propiconazole in soil from different depths
An, Deug-Hyeon ; Kim, In-Seon ; Suh, Yong-Tack ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 8~18
The degradation of a fungicide,
-propiconazole, in sterile and nonsterile soil from different depths was investigated.
-propiconazole plus propiconazole standard was treated on the soil at the rate of 7.55 mg/kg and the soil was incubated at
for 20 weeks. The amounts of
solvent extractable and non-extractable
, and degradation products of
-propiconazole were investigated during incubation time. The relative amounts of
released in the sterile and nonsterile soils were ranging from 0.7 to 1.3% and from 4.8 to 7.6% of applied
, repectively. The amounts of solvent non-extractable residues in the sterile and nonsterile soils were ranging from 11.2 to 22.1% and from 22.2 to 41.9% of of applied
, repectively. The amounts of solvent non-extractable residues were increased with incubation time and most of
were detected in the humin fraction. The hydroxylated and ketone compound were confirmed as a degradation products of propiconazole by GC/MS analysis, whereas parent compound was detected in sterile soil, which suggested that propiconazole was not degraded biologically under the sterile soil. From the results of volatilization, mineralization and degradation of propiconazole, propiconazole was stable chemically and bilogically in soil.
Response of domestically collected Echinochloa species to cyhalofop-butyl and pyribenzoxim herbicides, their absorption and translocation
Lee, In-Yong ; Park, Jae-Eup ; Park, Tae-Seon ; Kim, Kil-Ung ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 19~28
To investigate the physiological and biochemical differences between susceptible and tolerant species of Echinochloa species to the foliar applied cyhalofop-butyl and pyribenzoxim herbicides, herbicidal response, the rate of absorption, translocation and metabolism were studied. Among 148 individuals of Echinochloa species collected from 41 sampling sites in Korea which were classified into 7 geographical regions, based on morphological characteristics of plant and seed type, 46 lines were used for further studies. From them, E. crus-galli var. praticola collected from Hwanggan and E. crus-galli var. crus-galli collected from Namyangju were selected as the most susceptible species to cyhalofop-butyl and pyribenzoxim, respectively. Meanwhile, E. oryzicola(from Cheju) and E. crus-galli var. crus-galli(from Asan) were selected as tolerant species to cyhalofop-butyl and pyribenzoxim, respectively. Application of radio-labelled herbicides on the 1st leaf to both susceptible and tolerant Echinochloa species exhibited that the applied
-pyribenzoxim were more easily absorbed and translocated into stem tissues than root. Absorption of
-Cyhalofop-butyl increased rapidly at 1 h after application and reached the maximum at 12 h after application. However, the absorption rate of
-pyribenzoxim was not changed. Two metabolites from cyhalofop-butyl-treated plants and one metabolite from pyribenzoxim-treated plants were separated by TLC. The amount of metabolite 1 in cyhalofop-butyl-treated tolerant species was significantly higher than that in the susceptible one, suggesting differences in detoxification ability between susceptible and tolerant species.
Leaching characteristics of the bipyridylium herbicide paraquat in soil column
Kwon, Jeong-Wook ; Lee, Jae-Koo ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 29~36
The leaching behaviour of
-paraquat in soil was investigated using soil columns (5 cm I.D.
30 cm H.) parked with two soils of different physicochemical properties.
-Activities leached from the soil A (loam) columns with and without rice plants for 117 days were 0.42 and 0.54% of the originally applied, whereas those from the soil B (sandy loam) were 0.21 and 0.31%, respectively.
-Activities absorbed by rice plants from soil A and B were 3.87 and 2.79%, respectively, most of which remained in the root. Irrespective of soil types, more than 96% of the total
resided in soil, mostly in the depth of
cm. The water-extractable
in soil was in the range of
of the total
applied. The rest of
, which corresponds to non-extractable soil residues of [
]paraquat, was distributed in humic substances in the decreasing order of humin>humic acid>fulvic acid. The soil pH of the columns without rice plants increased after the leaching experiment due to the flooded anaerobic condition resulting in the reduction of the
concentration, whereas that of the columns with rice plants did not increase by the offsetting effect of the acidic exudates from the roots. Low mobility of paraquat in soil strongly indicates that no contamination of ground water would be caused by paraquat residues in paddy soils under normal precipitation.
Residue analysis of the systemic insecticide carbofuran in some crops and its safety evaluation
Lee, Jae-Koo ; Choi, Sin-Jong ; Kyung, Kee-Sung ; Ahn, Ki-Chang ; Kwon, Jeong-Wook ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 37~46
In order to ascertain the safety of the systemic insecticide carbofuran-treated crops, samples of garlic, peanut and potato were collected randomly from markets located in the main producing areas and analyzed for the residue of carbofuran and its main metabolite, 3-hydroxycarbofuran. The in vitro metabolism of carbofuran in phosphate buffer extracts of the crops was investigated. Two (M-12 and M-16) out of 20 mature garlic samples contained 0.13 and 0.07 mg/kg of carbohran, respectively, showing a detection incidence of 10%. The residue levels were less than the maximum residue limit (0.5 ppm) set by Korean Food and Drug Administration. Only one sample of mature garlic (M-12) out of 20 contained 0.13 mg/kg of 3-hydroxycarbofuran. The residues of carbofuran and 3-hydroxycarbofuran in the immature garlic, peanut and potato samples were less than the detection limits, 0.02 mg/kg for carbofuran and 0.06 mg/kg for 3-hydroxycarbofuran. The application of carbofuran to the fields of garlic, peanut and potato would be safe, considering that the estimated maximum acceptable daily intake of carbofuran from garlic was 0.0013 mg which is 0.24% of the maximum acceptable daily intake (0.55 mg). Carbofuran was hydrolyzed in vitro mainly to carbofuran phenol (m/z 164) in the respective phosphate buffer extracts of the three crops in contrast to the major oxidative metabolism in situ. The amount of the metabolite increased with the incubation time.
Artificial diminution of the residual pesticides on horticultural crops using photosensitizers
Lee, Jae-Koo ; Kwon, Jeong-Wook ; Ahn, Ki-Chang ; Park, Ju-Hyoung ; Lee, Jun-Su ; Park, Jung-Ok ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 47~53
Photosensitizing activities of some photosensitizers (PS) for the artificial diminution of pesticide residues on horticultural crops were investigated. Five fungicides, iprodione, bitertanol, chlorothalonil, myclobutanil, and dichlofluanid were sprayed on apple and cucumber, followed by the application of each selected photosensitizer, and the samples were collected 0, 1, 3, 7, 15 days after the photosensitizer application and analyzed for the residual amounts. Of the 40 photosensitizers tested, six selected on the basis of the eliminating effect of pesticide residues were PS-1 (aromatic ketone), PS-2 (aromatic amine), PS-3 (quinone), PS-4 (inorganic compound), PS-5 (organic acid salt), and PS-6 (semiconductor photocatalyst). The residual amount of iprodione after 15 days of the application of PS-1 was 74% of that of the control. For bitertanol, the residual amount after 15 days of the application of PS-1 accounted for 78% of that of the control. The residual amounts of chlorothalonil after 1 day of the application of PS-1 and PS-2 accounted for 56 and 54% of those of the control, respectively. The residual amounts of iprodione on cucumber after 3 days of the application of the photosensitizers PS-1 and PS-2 were 44 and 67% of those of the untreated control, respectively. For myclobutanil, the residual amount after 15 days of the application of PS-6 accounted for 45% of that of the control. In case of dichlofluanid, the residual amount after 3 days of the application of PS-1 accounted for 44% of that of the control. Based on the results, PS-1 turned out to be the most promising photosensitizer for the accelerated photodegradation of the above fungicides on apple and cucumber.
Behavior of the herbicide metolachlor in carps
Kyung, Kee-Sung ; Kim, Jin-Wha ; Lee, Byung-Moo ; Oh, Byung-Youl ; Jeong, Young-Ho ; Lee, Jae-Koo ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 54~59
In order to investigate the behavior of the herbicide metolachlor [2-chloro-6'-ethyl-N-(2-methoxy-1-methylethyl)aceto-O-toluidide] in fish, carps (Cyprinus carpio L.) were exposed to the herbicide at
(1.93 mg/L) for 4 days. Metolachlor dissolved in water was absorbed rapidly into carps to mark the maximum concentration 6 hours after exposure. The amounts of the
-metolachlor and its metabolites absorbed in gall were much higher than those in the other parts, strongly suggesting that biliary excretion involving enterohepatic recirculation could be an important route for the elimination of metolachlor. The
-radioactivity distributed into aqueous phase fraction in test water and in carp extract was increased in time-dependent manner. Extraction rate of
absorbed in carp tissues was decreased remarkably up to 6 hours after exposure, suggesting that the possible polar metabolites of metolachlor were transformed into the conjugates to form non-extractable bound residues.
Temperature and dose-size effects on infectivity and reproduction of entomopathogenic nematode, Steinernema longicaudum Gongju Strain
Choo, Ho-Yul ; Lee, Dong-Woon ; Ha, Pan-Jung ; Kim, Hyeong-Hwan ; Chung, Hye-Jin ; Lee, Sang-Myeong ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 60~68
Effects of temperature and dose-size on infectivity and reproduction of Korean entomopathogenic nematode, Steinernema longicaudum Gongju strain were examined. The greater wax mea Galleria mellonella larvae were exposed to 5, 10, 20, 40, 80, and 160 infective juveniles/larva in
mm petri dishes and kept in
incubators. Each petri dish contained one larva weighed from 180 to 200 mg. Infectivity was observed everyday for 14 days and reproduction for 30 days. The infectivity of S. longicaudum was more influenced by temperature than by dose-size. Mortalities by S. longicaudum were lower at
at all concentrations but higher at
even at lower concentrations, 5 or 10 infective juveniles/larva. Lethal time was also shorter with increasing temperature and dosages. All host larvae died at
in 2 days at the rate of 160 infective juveniles per host while 83.3% of tested larvae died at
in 10 days and 90% at
in 6 days at the rate of 5 infective juveniles. Reproduction was also better with increasing temperature and dosages. The highest number of progenies was obtained at
in 6 days at the rate of 80 infective juveniles. However, progenies were not produced from cadavers at
. Reproductive period was the shortest at
of all temperatures by 6 to 9 days. The results indicated that optimum temperatures for infectivity was
Evaluation of effectiveness and bioassay of insecticide residues of chlorfenapyr(ac303 630) against Thrips palmi Karny(Thysanoptera ; Thripidae) under laboratory and vinyl house conditions
Park, Jong-Dae ; Lee, Ho-Bum ; Kim, Do-Ik ; Kim, Seon-Gon ; Song, Seong-Do ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 69~73
The insecticidal activities and residues of chlorfenapyr [4-bromo-2-(4-chlorophenyl)-1-ethoxymethyl-5-trifluorornethyl pyrrole-3-carbonitrile] against Thrips palmi was evaluated under laboratory and vinyl house conditions. Effectiveness of chlorfenapyr against T. palmi on red pepper leaves was lasted for 9 days at a concentration of 50 ppm but there was no significant differences between emulsifiable concentration and wettable granule under laboratory conditions. In vinyl house, high toxicity was investigated at 6 hours after application of chlorfenapyr in a concentration of 50 and 100 ppm and insecticidal effect was maintained for 11days after 2 times weekly application in cucumber. Control effect was above 97% against T. palmi larva and larva+adults after 2 times weekly application in vinyl house.
Effect of tebufenozide on embryonic and postembryonic development of sycamore lace bug, Corythucha ciliata(Hemiptera: Tingidae)
Choi, Mi-Hyun ; Kim, Jeong-Wha ; Kim, Gil-Hah ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 74~80
These studies were carried out to investigate the effects of nonsteroidal ecdysone agonist, tebufenozide on embryonic and postembryonic development of sycamore lace bug, Corythucha ciliata. Tebufenozide exhibited ovicidal activity(
ppm). Susceptibility of each instar nymphs to tebufenozide was nearly same(
ppm). The tebufenozide treatment in the final instar affected the emergence, longevity and fecundity of surving adults significantly. Tebufenozide applied at high concentration (10 ppm) to younger adults delayed prioviposition period, and decreased adult longevity, the number of eggs laid per female and hatchability. The treatment also inhibited the ovarian development of the female adults.
Change in concentration and bioactivity of soil-applied pretilachlor under various soil moisture conditions
Lee, Do-Jin ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 81~85
Concentration change of soil-applied pretilachlor (2-chloro-2',6'-diethyl- N-2-propoxyethyl)-actanilide) was investigated under upland condition with various soil moisture contents ranging from 50 to 80%(water content by weight). Following pretilachlor from each soil solution was extracted by centrifugation using double tubes, its concentration was determined by HPLC. Pretilachlor concentration in the soil solutions were almost the same under various soil moisture conditions. However, the total amount of pretilachlor increased as the soil moisture content increased. With increasing soil moisture content, the bioactivity of soil-applied pretilachlor on inhibiting the growth of Echinochloa ultilis Ohwi et Yabuno and the absorption of
-pretilachlor in its plants were also enhanced. Our results demonstrate that the absorption of pretilachlor in plants varies with soil moisture content and thus the bioactivity of soil-applied pretilachlor on inhibiting plant growth is different under various soil moisture conditions at the same dosage based on air-dried weight.
Parameter focusing on the fungicidal activity of methanesulfonamide and phenylhydrazone derivatives
Sung, Nack-Do ; Kim, Sun-Young ; Choi, Joong-Kwon ; Ok, Whan-Suk ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 86~89
A series of methanesulfonamide (I a- I g) and phenylhydrazone (IIa-IIh) derivatives were synthesized and their fungicidal activity in vitro against gray mold (BC: Botrytis cinerea), phytophthora blight (PC: Phytophthora capsici) and sheath blight (RS: Rhizoctonia solani) were measured by agar dilution method. The (II) deriviatives showed higher activity than ( I ) derivitives. And the relative orders of the fungicidal activity are BC=PC>RS, Among these compounds, 3-chlorophenyl substituent, IIg showed the most highest activity (
) against PC. From the parameter focusing technique, major factors on the activity were ovality, polar and logP constant and so on.
Synthesis and herbicidal properties of vinylsulfonylphenyl triketones and their related derivatives
Jeon, Dong-Ju ; Lee, Jung-No ; Kim, Hyoung-Rae ; Song, Jong-Hwan ; Kim, Kyoung-Mahn ; Hong, Kyung-Sik ; Ryu, Eung-K. ;
The Korean Journal of Pesticide Science, volume 3, issue 2, 1999, Pages 90~93
Several vinylsulfonylphenyl triketones and 2-alkoxy- and 2-(N,N-diethylamino) ethanesulfonylphenyl triketones have been synthesized, and their herbicidal activities in flooded paddy field were studied. Herbicidal effects of vinylsulfonyl triketones 6a-c were not satisfactory, whereas 2-alkoxyethanesulfonylphenyl triketones 7a and 7b showed good herbicidal activities without meaningful selectivity to rice.